Signal for motor vehicles



E. AUFIERU.

SIGNAL FOR MOTOR VEHICLES.

APPLlcATxoN flLED FEB. 26, 1921.

1,414,651 8. Patented May 2, 1922g fig.;

Sube/nto@ Emanuel afcera MLIS /lfbomexp v unirse eran@ EMAN'UEL -A CORPORATION 0F NEW YORK.

SIGNAL FOR MOTOR VEHICLES.

Lamers.

vSpecification of Letters Patent. Paftnted. May 192,2.

Applicationled February 26J 1921. Serial No..448,089.

lowing to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which 1t 'ap ertains, to make and use the same.

y inventionv is an improvement in signals for motor vehicles, and relates to audiof thecharacter in which av diaphra is rapidly vibrated to produce soun waves, `by means of an electrically controlled motor. f

An object of the invention is to provide in such a device, la simple inexpensive mounting for the motor in' the forni of an open topl frame casing in which the sides and .ends'provide a frame for suphood 7,

porting the motor shaft, pole pieces and brush, and the bottom acts as a stay and brace, to hold the sides vand the ends parallel other.

Another object is to rovide a-mounting of, the character speci ed capable of vbeing easily attached to the signal and detached therefrom, and carrying means for thoroughly lubricating the motor shaft over* extended periods without attention, and wherein the shaft .is so mounted that it maybe actuated toward and from the diaphragm, to insure the proper engage-- ment between the same andthe diaphragm, and compensate for wear.

. In thedrawings, Figure 1 is a horizonal section through the signal and the hood; Figure 2 is a -longitudinal 'section of the motor casing; Figure 3 is a section on the line 3--3 of Figure 2. v

In the present embodiment of thev 1nvention, the signal comprises a diaphragm' and .in proper position with respect to each `1 which is held between Athe section 2 and 3 of a casing, the said sections being held together by screws 4. The section 2 o f te casing isla washer and'c'arries the amphfier or horn 5. VThe section 3 has a reduced Iortion `6 'circular in cross section about iivhich lits the open end ofthe cup shap'ed which protects the motor and' is connected to the section 3 of the dlaphragm vcasing` within the hood. The diaphragm has a lug or tooth 8' centrally arranged and this tooth is adaptedtobe engaged by the teeth at the periphery of a disc 9 connected to the motor or armature shaft 10.

The motor, which is o'f any desired construction, .comprising the armature shaft 10, the pole pieces 11, andthe brushes 12, cooperating with the commutator 13, is 'supported by a 'frame having an open top, and comprislng sides 14, ends 1 5 and a bottom 16. The ends 15 have openings for the motor shaft, andthe pole pieces l1 have reduced portions 11a, .which are passed through openings in the sides 14, and are headed .outside of the sides as shown,- to hold the pole ieces in place. The brushes 12 are carried) by supports 17 which are ,riveted to the sides 14 of the frame andv are insulated therefrom as shown. The motor frame may be from suitable sheet metal,

las for instance, steel of a suitable gauge,

and the sides and ends provide a frame or support for the motor while the bottom' AUFIERO, OF BROOKLYN, NEW YORK, ASSIGNOR T0 E. A. LABORATORIES, y. INC., OF BROOKLYN, NEW YORK,

acts as a stay and'brace to hold the sides and ends parallel and in proper relationwith respect to each other. At the end remote from the disc 9, the frame end `15 has a threaded opening larger than the arma- `ture shaft, and a nut 18 is threaded into this opening, the armature shaft assing through the nut. The nut is lheld in posi. tion with respect to the end by means of a locking nut 19, and the nut carries a washer 20, which is connected with 'the shaftin such manner as-to constrain the shaft to move longitudinally with the nut While permitting the shaft to rotate freely with respect to the nut. This construction v is shown and'described in my copending application, Serialy No.' 448,088 of even date herewith. i N

The motor frame isl connected to the diais connected to the section 3 of the signal casing, and to the end of the-motor frame by screws 22. These screws are passed through phragm casing by meansof a bar 21, which cups extend onboth sides of the shaft and above and below the same, so that when the shaft is`in` place, it is entirely surrounded by lubricant, and will be tl'ioroughly lubri-` cated over an extended period, without the necessity of further attention. Referring to Figures 2 and 3, it will be seen that the end 15 of the motor which is adjacent to the bar 21, has an opening of sufficient size to permit the passage of the oil cup, the said cups being plates which are riveted to the bar and the motor frame and have their central portion offset outwardly to provide the cups. The hood 7 issecured in place by means/of a screw I25 which passes through the end of the hood and engages a threaded opening in the adjacent end of the motor frame.

In assembling the improved signal, 'the motor, is lirst assembled in the frame. The disc 9 is threaded onto the armature shaft and when the said disc is removed the shaft may be inserted through the opening in the bar l21, it beingassnmed that the section 3 l,0f the diaphragm casing is detached to permit the assembling of the parts. The motor frame is now connected to the bar 21, and the section 3 of the diaphragm casing by means of the screw 22, and the disc is threaded onto the motor shaft. The section 3 is then reconnected to the section 2 and the shaft 1() is adjusted to provide the proper engage-` ment between the teeth of the disc and the lug 8.l Afterward the hood may be replaced. Castviron and castings of every sort are eliminated in the improved motor support,

the entire construction being of sheet metal.

2. ln a signal of the class described, the

combination with the diaphragm and casing therefor, of an electrically controlled motor for vibrating the diaphragm, said motor comprising a box-like sheet metal frame, an armature 'shaft perpendicular to said diaphragm, bearings on two opposite sides of said frame for said shaft, an actuator for the diaphragm outside of .said frame, pole pieces andv brushes carrie-d by thcother two opposite sides of said frame, a web connecting the edges of said four sides, and a bar attached to the side of the frame adjacent Lai-reis said diaphragm casing, said bar containing the bearing for the armature shaft.

3. In a signal of the class described, the combination with the' diaphragm and the casing therefor, of an electrically controlled motor for vibrating the diaphragm, said motor comprising a frame having an open top and having openings in the ends for the motor shaft, the pole pieces and brushes beingv carried by the sides of the frame, and means for attaching the motor frame to the diaphragm casing, said means comprising a bar adapted to be arranged transversely of the diaphragm casing, and a common means for connecting 'the bar to the diaphragm casing and to the adjacent end of the motor frame, said bar having a shaft bearing and carrying an oil cup through which the shaft extends and-the adjacent end ofthe motor frame having an opening for receiving' the oil cup.

4; lln a signal of the class described, the combination with the diaphragm of a support therefor, and means for vibrating the diaphragm comprising an electric motor, said motor having its frame formed of a rectangular sheet metal piece with the armaturel bearings in two opposite sides and the field magnets attached to the other two opposite sides, the four sides being integral and continuous throughout and having a web connecting the edges of said four sides.

5. ln asigna] of the class described, the combination with the diaphragm, of a support therefor, means for vibrating the diaphragm comprisingan electrical motor, said motor having a frame formed of a single sheet of metal stamping of rectangular shape with the four sides thereof integral and continuous throughout, bearings for the motor shaft in two of said sides, lieid magnets attached to the other two sides and a fifth side transverse of the plane ofthe other four sides and integral therewith.

6.1m a signal of the class described, the combination with the diaphragm of means forvvibrating the diaphragm comprising an electric motor, said motor having a frame consisting of a single piece of drawn sheet metal of rectangular cross section and with a. web or bottom piece integral with the four sides,a motor shaft bearing in one of said four sides, the opposite side having a hole of larger diameter than the motor shaft and an extra piece carrying the other motor shaft bearing attached to said last mentioned side with the bearing "in line with the hole,

whereby the motor may be taken downby detaching the said piece from the frame.

In testimony whereof l aiiix my signature.

EMNNUEL AUF'lER.

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